A multi-domain qos path calculation method supporting privacy protection in sdn network
A privacy protection and path calculation technology, applied in the Internet field, can solve problems such as reducing network performance, and achieve the effect of increasing transmission efficiency and reducing complexity
Active Publication Date: 2019-08-27
ANHUI UNIVERSITY
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Problems solved by technology
Generally, a single controller can be used in the network to complete the corresponding device management and network control functions, and there will be no obvious impact on performance. However, for a large-scale data center network and campus network, there are several domains, and a single The number of controllers affects the information interaction between the controller and the switch, thereby reducing the performance of the network. Therefore, it is necessary to expand the number of controllers, use multiple controllers for physical distribution, and logically manage the network centrally.
Multiple controllers can solve the performance improvement and expansion problems of the network, but there are still some problems
Method used
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Embodiment 1
[0055] Such as figure 1As shown, each SDN controller needs to register and authenticate with the PKG key management center, the PKG server distributes private keys to each SDN controller through a secure channel, and each SDN controller controls the SDN through WE-Bridge and its adjacent domains After the connection is completed, the SDN controller exchanges network information with its neighbor controllers, including controller ID, version number, IP address and responsible IP address segment. After completing the exchange of basic information, each SDN controller needs to send a notification to the neighboring controllers when the network information owned by each SDN controller changes. In this way, each SDN controller can have the controller of the global network and the virtual network topology map of the IP address segment it is responsible for.
[0056] Such as figure 2 As shown, when there is a flow request, first check whether the destination host IP of the flow be...
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The invention discloses a multi-domain QoS path calculation method supporting privacy protection in an SDN network, comprising the following steps: an SDN controller applies for authentication from a key management server and obtains a key; exchanges some basic network information between SDN controllers; calculates Minimum delay path; calculate minimum packet loss rate path; calculate maximum bandwidth path; use secure multi-party computing protocol between SDN controllers to calculate multi-constraint QoS paths; source SDN controller notifies controllers of domains that QoS paths pass through to issue flow tables to the SDN switch. The present invention uses a secure multi-party protocol to calculate the SDN domain through which the source and destination hosts communicate. The specific intra-domain path is managed by the controller in charge of each SDN domain. Policy, topology and other information of each domain network.
Description
technical field [0001] The invention relates to an Internet technology, in particular to a multi-domain QoS path calculation method supporting privacy protection in an SDN network. Background technique [0002] Different from the traditional network architecture, SDN decouples the control plane from the forwarding plane and adds an SDN controller. Generally, a single controller can be used in the network to complete the corresponding device management and network control functions, and there will be no obvious impact on performance. However, for a large-scale data center network and campus network, there are several domains, and a single The number of controllers affects the information interaction between the controller and the switch, thereby reducing the performance of the network. Therefore, it is necessary to expand the number of controllers, use multiple controllers for physical distribution, and logically manage the network in a centralized manner. Multiple controlle...
Claims
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IPC IPC(8): H04L12/721H04L12/715H04L12/741H04L29/06H04L45/74
CPCH04L45/04H04L45/124H04L45/74H04L63/0442H04L63/0823
Inventor 仲红崔杰房亚明许艳田苗苗
Owner ANHUI UNIVERSITY